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MathsAges 7-9

Doubling & halving

Double a whole number or find half of an even number to build rapid mental arithmetic. Review suitability for your learners before teaching.

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Age band:Ages 4-6Ages 7-9

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Worksheet StudioPractice pack · Ages 7-9

Doubling & halving

Take your time. Show your thinking.

  1. 1. What is half of 60?

    60 · Doubling & halving

  2. 2. What is double 9?

    9 · Doubling & halving

  3. 3. What is double 12?

    12 · Doubling & halving

  4. 4. What is half of 76?

    76 · Doubling & halving

  5. 5. What is double 21?

    21 · Doubling & halving

  6. 6. What is double 20?

    20 · Doubling & halving

  7. 7. What is double 6?

    6 · Doubling & halving

  8. 8. What is double 11?

    11 · Doubling & halving

  9. 9. What is double 31?

    31 · Doubling & halving

  10. 10. What is half of 72?

    72 · Doubling & halving

  11. 11. What is half of 54?

    54 · Doubling & halving

  12. 12. What is double 18?

    18 · Doubling & halving
12 questions · Seed 43 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 7-9

Doubling & halving

Answers and reasoning. Review before teaching.

  1. 1. What is half of 60?

    30

    Half of 60 is 60 ÷ 2 = 30.

  2. 2. What is double 9?

    18

    Double 9 is 9 + 9 = 18.

  3. 3. What is double 12?

    24

    Double 12 is 12 + 12 = 24.

  4. 4. What is half of 76?

    38

    Half of 76 is 76 ÷ 2 = 38.

  5. 5. What is double 21?

    42

    Double 21 is 21 + 21 = 42.

  6. 6. What is double 20?

    40

    Double 20 is 20 + 20 = 40.

  7. 7. What is double 6?

    12

    Double 6 is 6 + 6 = 12.

  8. 8. What is double 11?

    22

    Double 11 is 11 + 11 = 22.

  9. 9. What is double 31?

    62

    Double 31 is 31 + 31 = 62.

  10. 10. What is half of 72?

    36

    Half of 72 is 72 ÷ 2 = 36.

  11. 11. What is half of 54?

    27

    Half of 54 is 54 ÷ 2 = 27.

  12. 12. What is double 18?

    36

    Double 18 is 18 + 18 = 36.

12 questions · Seed 43 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9

Doubling & halving

Take your time. Show your thinking.

  1. 1. What is half of 60?

    60 · Doubling & halving

  2. 2. What is double 9?

    9 · Doubling & halving

  3. 3. What is double 12?

    12 · Doubling & halving

  4. 4. What is half of 76?

    76 · Doubling & halving

  5. 5. What is double 21?

    21 · Doubling & halving

  6. 6. What is double 20?

    20 · Doubling & halving

  7. 7. What is double 6?

    6 · Doubling & halving

  8. 8. What is double 11?

    11 · Doubling & halving

  9. 9. What is double 31?

    31 · Doubling & halving

  10. 10. What is half of 72?

    72 · Doubling & halving

  11. 11. What is half of 54?

    54 · Doubling & halving

  12. 12. What is double 18?

    18 · Doubling & halving
12 questions · Seed 43 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9

Doubling & halving

Answers and reasoning. Review before teaching.

  1. 1. What is half of 60?

    30

    Half of 60 is 60 ÷ 2 = 30.

  2. 2. What is double 9?

    18

    Double 9 is 9 + 9 = 18.

  3. 3. What is double 12?

    24

    Double 12 is 12 + 12 = 24.

  4. 4. What is half of 76?

    38

    Half of 76 is 76 ÷ 2 = 38.

  5. 5. What is double 21?

    42

    Double 21 is 21 + 21 = 42.

  6. 6. What is double 20?

    40

    Double 20 is 20 + 20 = 40.

  7. 7. What is double 6?

    12

    Double 6 is 6 + 6 = 12.

  8. 8. What is double 11?

    22

    Double 11 is 11 + 11 = 22.

  9. 9. What is double 31?

    62

    Double 31 is 31 + 31 = 62.

  10. 10. What is half of 72?

    36

    Half of 72 is 72 ÷ 2 = 36.

  11. 11. What is half of 54?

    27

    Half of 54 is 54 ÷ 2 = 27.

  12. 12. What is double 18?

    36

    Double 18 is 18 + 18 = 36.

12 questions · Seed 43 · Age guidance, not curriculum certification